/*
 * WPA Supplicant / shared MSCHAPV2 helper functions / RFC 2433 / RFC 2759
 * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 */

#ifndef MS_FUNCS_H
#define MS_FUNCS_H

void generate_nt_response(const u8 *auth_challenge, const u8 *peer_challenge,
        const u8 *username, size_t username_len,
        const u8 *password, size_t password_len,
        u8 *response);
void generate_nt_response_pwhash(const u8 *auth_challenge,
         const u8 *peer_challenge,
         const u8 *username, size_t username_len,
         const u8 *password_hash,
         u8 *response);
void generate_authenticator_response(const u8 *password, size_t password_len,
             const u8 *peer_challenge,
             const u8 *auth_challenge,
             const u8 *username, size_t username_len,
             const u8 *nt_response, u8 *response);
void generate_authenticator_response_pwhash(
  const u8 *password_hash,
  const u8 *peer_challenge, const u8 *auth_challenge,
  const u8 *username, size_t username_len,
  const u8 *nt_response, u8 *response);
void nt_challenge_response(const u8 *challenge, const u8 *password,
         size_t password_len, u8 *response);

void challenge_response(const u8 *challenge, const u8 *password_hash,
      u8 *response);
void nt_password_hash(const u8 *password, size_t password_len,
          u8 *password_hash);
void hash_nt_password_hash(const u8 *password_hash, u8 *password_hash_hash);
void get_master_key(const u8 *password_hash_hash, const u8 *nt_response,
        u8 *master_key);
void get_asymetric_start_key(const u8 *master_key, u8 *session_key,
           size_t session_key_len, int is_send,
           int is_server);
int __must_check encrypt_pw_block_with_password_hash(
  const u8 *password, size_t password_len,
  const u8 *password_hash, u8 *pw_block);
int __must_check new_password_encrypted_with_old_nt_password_hash(
  const u8 *new_password, size_t new_password_len,
  const u8 *old_password, size_t old_password_len,
  u8 *encrypted_pw_block);
void nt_password_hash_encrypted_with_block(const u8 *password_hash,
             const u8 *block, u8 *cypher);
void old_nt_password_hash_encrypted_with_new_nt_password_hash(
  const u8 *new_password, size_t new_password_len,
  const u8 *old_password, size_t old_password_len,
  u8 *encrypted_password_hash);

#endif /* MS_FUNCS_H */
